STRENGTHENING OF RADIO COMMUNICATION INTERFERENCE IMMUNITY BY CLIPPING BM VOICE SIGNAL
Abstract
The paper continues research aimed at increasing interference immunity of railway service radio communication. Previously proposed method of clipping referred to single-sideband voice signal with frequency modulation (hereinafter - FM). Now the article refers to double-sideband signal with a balanced modulation (hereinafter - BM). The same gain in fighting interference is proved. Correlation technique allows evaluating harmonic distortion at clipping BM signal. Such an assessment has not existed yet. Analytically, it is shown that application of the method is equally effective for single-sideband and double-sideband voice signals: interference immunity grows by 4,33 times, the level of harmonic distortions is the same (7,4%).
About the Authors
A. A. Volkov
Moscow State University of Railway Engineering (MIIT), Moscow, Russia.
Russian Federation
Russian Federation
V. A. Kuzyukov
Moscow State University of Railway Engineering (MIIT), Moscow, Russia.
Russian Federation
Russian Federation
M. S. Morozov
railway engineer, Moscow, Russia.
Russian Federation
Russian Federation
References
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3. Verzunov, M. V. SSB modulation in radio communication [Odnopolosnaja moduljacija v radiosvjazi] ■ Moscow, Voenizdatpubl., 1972, 296 p.
4. Volkov, A. A. The synthetic method of transmitting voice signals [Sinteticheskij metodperedachi rechevyh signalov]. Elektrosvjaz', 2004, Iss. 7.
Review
For citations:
Volkov A.A., Kuzyukov V.A., Morozov M.S. STRENGTHENING OF RADIO COMMUNICATION INTERFERENCE IMMUNITY BY CLIPPING BM VOICE SIGNAL. World of Transport and Transportation. 2015;13(5):80-84.
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